after some testing, the world spawn can only be the Original spawn point not the newly set spawn point. so i say it has to do with game issue. so if you have this on one of your maps try and find the first spawn point or get the seed and make a new world, see where you spawn, go back to your first map and reset your spawn point to that spot
when i try and /kill @s it does the same thing
after some testing, the world spawn can only be the Original spawn point not the newly set spawn point. so i say it has to do with game issue. so if you have this on one of your maps try and find the first spawn point or get the seed and make a new world, see where you spawn, go back to your first map and reset your spawn point to that spot